Recommendation for packing/shipping large speakers

mrboxonline.com will sell you custom made boxes and packing materials very reasonably priced. I purchased double boxing, sized to order, for very large Dunlavy SC-IVa’s I sent to England. 

That is useful to know ncarv, filed away for future reference
Thank you

Plycon is a vanline that specializes in feagile and high value items (think priceless marble statues or paintings).  They pick-up with a white glove service, pack, deliver & unpack, all the while your item is completely insured.  They’ll even deliver inside and place on position.

Wrapping each speaker in the Pink Rigid  Polystyrene Insulation available from any large hardware store will protect extremely well
- easy to cut to size
- The red Tuck Tape sticks to it very well and is strong
- even if the box gets damaged the polystyrene will most likely prevent damage to the speaker

I use the 1/2" but the 1" will provide that extra protection.

Regards - Steve